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Digital Watermarking using Wavelet Packet Transform for Remote Sensing Images  

한수영 (한양대학교 전자공학과)
이두수 (한양대학교 전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.40, no.5, 2003 , pp. 365-370 More about this Journal
Abstract
In this paper, a new watermarking algorithm that based on wavelet packet transform is proposed for remote sensing images, which include many high frequency components. It applies watermark to the overall subband that includes the lowest frequency band. Watermark is embedded on original image after selecting the significant wavelet packet coefficients. For selection of significant coefficients which watermarks is embedded on, zerotree algorithm is applied to wavelet packet coefficients using CPSO (Coefficient Partitioning Scanning Order). From the experimental result, the proposed algorithm shows better invisibility and robustness performance compare with conventional watermarking methods. Especially, it demonstrates better robustness for high image compression in the remote images.
Keywords
watermark; wavelet packet transform;
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